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Post by ralphob on Dec 7, 2011 5:32:02 GMT -8
I think i got a small problem.....need another build! Thinking of a 5.56 and not sure about Barrel selection. I would like one that shoots heavier bullets as my bolt gun doesnt like em above 55gns. Most of my shooting will be from 100-300 yds. Wondering if a BHW 20 inch bull barrel is the way to go or not. Would appreciate any and all opinions
Thanks
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Post by Brandon Sneed on Dec 7, 2011 5:43:49 GMT -8
I think i got a small problem.....need another build! Thinking of a 5.56 and not sure about Barrel selection. I would like one that shoots heavier bullets as my bolt gun doesnt like em above 55gns. Most of my shooting will be from 100-300 yds. Wondering if a BHW 20 inch bull barrel is the way to go or not. Would appreciate any and all opinions Thanks The 1/8 twist with 556wylde will provide you everything you need for shooting 55< grain projectiles. Factory or otherwise. 20" is a good length as well especially with rifle length gas. I prefer an 18" just for me and my uses though. Not a great deal of loss in velocity there either. Your choice seems quite thought out and I say order one ASAP!! Lol |
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Post by The Wolverine on Dec 7, 2011 6:13:29 GMT -8
Your bolt gun doesn't like pills over 55gr, because it's twist rate is too slow, probably 1-12.
A BHW poly-3, 1 in 8, will shoot anything you put in it, and most likely out shoot your bolt gun, and a lot more fun to shoot.
I am with Brandon, 18'' is my favorite, but the 20'' will get you a bit more speed.
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Post by ralphob on Dec 7, 2011 7:00:30 GMT -8
Wolverine - You are right my bolt gun is a 1 in 12 but a downright tackdriver with 52-55 gn vmax's under 200 yds. I am looking for something more fun to shoot and I am thinking more accurate down range (300+) yds so I was thinking the slower twist being able to throw the heavier bullets more accurately.
Do you guys think a bull barrel improves accuracy significantly in a AR?
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Post by The Wolverine on Dec 7, 2011 8:48:47 GMT -8
''bull barrel improve accuracy significantly in a AR?''
Not at all, until things get hot.
Cold or warm=no improvement in accuracy.
Hot barrel, Yes.
The difference is in the sheer mass of a bull barrel as a heat sink. The harmonics (vibrations) change when things get hot. The mass of the bull barrel is less susceptible to harmonic changes, even when hot.
I am certain there are members here that can explain it better than I have.
A bull barrel is surprisingly heavy, especially on a AR, very front heavy.
Great for a bipod, bench rest setup, not so great for carrying or shooting from non supported positions.
I would heft a Bull Barrel equipped AR before I would buy one, unless you want a bench-rest, bipod gun.
BHW standard profile is a great compromise between thin, and bull. It is SPR style .750 at the gas bolck, I believe 1" under hand guard. Enough meat to act as a heat sink, but not too heavy to carry all day.
What type of shooting do you plan on doing?
Paul
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Post by ralphob on Dec 7, 2011 9:25:13 GMT -8
I am mainly a Benchrest shooter, someday a PD mission may be in store for me, but that wouldnt be a routine type thing. Now you got me leaning to the standard profile....decisions...decisions!!
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Post by GLSHOOTER on Dec 7, 2011 13:51:38 GMT -8
Wolverine - You are right my bolt gun is a 1 in 12 but a downright tackdriver with 52-55 gn vmax's under 200 yds. I am looking for something more fun to shoot and I am thinking more accurate down range (300+) yds so I was thinking the slower twist being able to throw the heavier bullets more accurately. Do you guys think a bull barrel improves accuracy significantly in a AR? The proper twist rate is determined by the LENGTH of the bullet not the weight. Normally heavy bullets are longer but some of the new environmental green ones are long for their weight. The long bullets need a faster twist not a slower one. A 1:9 will handle any practical varmint weight bullet you would use in a 223. Few of them are built that exceed 60 grains that would do well on PD's. You want a Red Mist and Chunky Monkey action out there and if you go to the big boys you won't see it. The heaviest I shoot in my 223's are the 55 grain poly-tipped but lately I have gone to a 40 grain and push the snot out of them. The ballistics out to 300 yards is so close it is negligible and I love the down range performance. In my 20's I'm shooting 32's and 39's pushed hard for the long shots. They shoot so flat it is almost like cheating. I do have some standard 20" " heavy barrels that shoot well and I have some heavier 24" varmint weight types, 0.900 + at the muzzle, rifles. The big boys with a scope and bipod weigh in at 11 pounds 4 ounces. Not to much to hump around the PD fields and enough weight to watch the bullet strike. I get good accuracy out of both weights but feel a bit more relaxed when I shoot the heavy ones rapidly though I know that the other lighter ones stay on track from my experience in shooting some IPSC matches hard and fast with high round counts on the stages. Keep us posted as the build develops. Greg |
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Post by ralphob on Dec 7, 2011 16:54:58 GMT -8
Interesting info on bullet length vs weight and twist....makes a lot of sense. I am more of a target shooter and pretty far away from PD territory so i am not sure if i will ever get out west to PD hunt. Would like to do it someday and I have a 17 fireball that would also be fun to point and click at them. Well after all this great advice I called Andy at BHW and put a order in for a 20 inch standard barrel 5.56 with a rifle length gas block. Now the wait begins.  I think i am just going to build the upper and use in it in the lower i built for the 264lbc as I have the Gieselle SSE trigger in it. (at least thats what i am telling myself in an attempt save a few dollars). Now i got to start thinking about glass....it never ends! |
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Post by Deleted on Dec 7, 2011 17:08:19 GMT -8
All the guys above gave you some good info and I think you made a great choice in the 20 inch , it will be fun to shoot and you can also carry it all day if need be. Keep all us posted on the build and if you need any help just ask. Thanks
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Post by GLSHOOTER on Dec 7, 2011 17:47:26 GMT -8
Good choice. Now we get to agonize with you during the wait!!  Greg |
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Post by ralphob on Dec 8, 2011 5:03:05 GMT -8
Thanks for all of the help!!! It's really appreciated. Will keep you all updated as to the progress of the build.
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Post by ralphob on Jan 24, 2012 19:21:47 GMT -8
Today the man in the big brown truck finally stopped in front of my house. Finally the wait is over, my new barrel is here. Looks awesome and I like the lasered BHW logo. Now its time to get to work and finish the upper. Need to decide what to load for it first!
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Post by GLSHOOTER on Jan 24, 2012 19:58:45 GMT -8
Today the man in the big brown truck finally stopped in front of my house. Finally the wait is over, my new barrel is here. Looks awesome and I like the lasered BHW logo. Now its time to get to work and finish the upper. Need to decide what to load for it first! Congratulations on the new arrival.  Might I suggest a box of 50 grain Hornady VMAX loaded over a nice stout charge of AA2015? Greg |
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Post by mattyno on Jan 22, 2013 7:01:33 GMT -8
What about Target crown vs threaded barrel. I am looking at prob an 18 bull for coyote, prairie dog and fun shooting but I am still working out the finer details.
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Post by Brandon Sneed on Jan 22, 2013 8:27:54 GMT -8
Honestly, unless you plan to suppress, or hunt at night, do not thread.
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I think i am just going to build the upper and use in it in the lower i built for the 264lbc as I have the Gieselle SSE trigger in it. (at least thats what i am telling myself in an attempt save a few dollars). Now i got to start thinking about glass....it never ends!
